Terry Hill lost his job shortly after the official opening of the Gracemere Overpass

ABC News: Paul Robinson

Transport and Main Roads Minister Scott Emerson is refusing to comment on claims of political interference in the sacking of a senior bureaucrat in central Queensland.

Rockhampton MP Bill Byrne says Main Roads regional director Terry Hill lost his job not long after former Labor MPs Robert Schwarten and Paul Hoolihan and ex-mayor Brad Carter attended the official opening of an overpass at Gracemere.

Mr Byrne says that is despite right to information documents showing Mr Hill was recommended for re-appointment.

"The question is how do you go through a merit-based selection where you are basically the best of 39 potential candidates and then magically be excluded from the appointment process," he said.

Mr Byrne says documents show the Minister's office requested the three former politicians not be asked to the function, but the invitations had already been sent.

"Extraordinary to see a Minister's office trolling through the guest list and deliberately asking for ex-Labor identities and the ex-Mayor of this community to be excluded for reasons that are simply unexplainable," he said.

"The career of a hard working, apolitical, a great regional manager has been essentially trashed."